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Catalyst for preparing propylene from butane and ethylene and preparation method thereof

A technology for producing propylene and catalyst from butene is applied in molecular sieve catalysts, chemical instruments and methods, catalysts for physical/chemical processes, etc. the effect of strength

Active Publication Date: 2011-03-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] One of the technical problems to be solved by the present invention is the problem of low catalyst activity and short life in the prior art, and a new catalyst for producing propylene from ethylene and butene is provided

Method used

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  • Catalyst for preparing propylene from butane and ethylene and preparation method thereof
  • Catalyst for preparing propylene from butane and ethylene and preparation method thereof
  • Catalyst for preparing propylene from butane and ethylene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] MCM-48 was prepared by a conventional method, and the average pore diameter of MCM-48 was 2.8 nanometers. Take 600 grams of MCM-48 with 200 grams of SiO 2 Mix to prepare a mixed carrier C with a certain particle size.

[0028] Mix 800 grams of carrier C and 1% scallop powder and put them into the mixer evenly, after stirring for 45 minutes, add the required 5% silica sol and 24 grams of ammonium metatungstate, then add 800 grams of deionized water, knead, After extrusion and drying, it was calcined at 550°C for 4 hours to obtain a disproportionation catalyst, which was designated as ACR-1. The evaluation of the catalyst was carried out on an olefin disproportionation evaluation device. Calculated by mass fraction, the main components of the raw material include: 5.37% butene-1, 57.27% butene-2 ​​and the balance of n-butane. The reaction is at a temperature of 300°C, a pressure of 3MPa, and a molar ratio of ethylene to butene of 3 and 4.8 hours -1 The evaluation was c...

Embodiment 2

[0030] The SBA-15 is prepared by a conventional method, and the average pore diameter of the SBA-15 is 9.5 nanometers. Take 800 grams of SBA-15 and 50 grams of SiO 2 Mix to prepare a mixed carrier C with a certain particle size.

[0031] Mix 850 grams of carrier C and 1% scallop powder and put them into the mixer evenly. After stirring for 45 minutes, add the required 5% silica sol and 180 grams of ammonium metatungstate, then add 850 grams of deionized water, knead, After extrusion and drying, it was calcined at 450°C for 8 hours to obtain a disproportionation catalyst, which was designated as ACR-2. The evaluation conditions are the same as in Example 1, and the evaluation results are shown in Table 2.

Embodiment 3

[0033] The MSU-x was prepared by a conventional method, and the average pore diameter of the MSU-x was 3.7 nanometers. Take 100 grams of MSU-x with 650 grams of SiO 2 Mix to prepare a mixed carrier C with a certain particle size.

[0034] Mix 750 grams of carrier C and 1% scallop powder and put them into the mixer evenly, after stirring for 45 minutes, add the required 5% silica sol and 60 grams of ammonium metatungstate, then add 750 grams of deionized water, knead, The catalyst precursor M was prepared by extruding, drying and calcining at 650° C. for 2 hours. Put 200 grams of magnesium oxide into a blender and stir, and add the required amount of 1% scallop powder, 5% silica sol and 40 grams of deionized water, stir for 30 minutes, knead, extrude, dry and roast at 550°C Catalyst precursor Y was produced in 6 hours. Mix M and Y evenly and record it as ACR-3. The evaluation conditions are the same as in Example 1, and the evaluation results are shown in Table 2.

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Abstract

The invention relates to a catalyst for preparing propylene from butane and ethylene and a preparation method thereof, mainly solving the problems of low activity and short service life of a catalyst in the prior art. The catalyst for preparing propylene from butane and ethylene comprises the following components in percentage by weight: 0-80 percent of at least one metallic oxide selected from alkali metals or alkaline-earth metals, 0.8-20 percent of tungstic oxide, 10-80 percent of at least one of MCM series molecular sieves, SBA series molecular sieves, HMS series molecular sieves, and MSUseries molecular sieves and 0-20 percent of SiO2. The invention better solves the problems in the prior art and can be applied to the industrial production of preparing the propylene from the butane and the ethylene.

Description

technical field [0001] The invention relates to a catalyst for producing propylene from ethylene and butene and a preparation method thereof. Background technique [0002] In recent years, with the continuous development of the economy, the market demand for light olefins (including ethylene, propylene, etc.) will continue to increase. Propylene is one of the most important basic organic raw materials second only to ethylene, and its largest use is to produce polypropylene (accounting for about half of its total), followed by the production of acrylonitrile, propylene oxide, isopropanol, and cumene , carbonyl alcohols, acrylic acid, propylene oligomers. [0003] The traditional methods of ethylene co-production and refinery recovery of propylene are obviously difficult to meet the growing demand for propylene. The use of olefin disproportionation technology can digest C without reducing the cracking severity of naphtha. 4 Distillate, and can increase the production of prop...

Claims

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Application Information

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IPC IPC(8): B01J29/78B01J29/80C07C11/06C07C6/04
CPCY02P20/52
Inventor 宣东王仰东刘苏
Owner CHINA PETROLEUM & CHEM CORP
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